Advertisements
Advertisements
Question
Make sentences using the given set of words.
99%, oxygen, nitrogen, air, together
Advertisements
Solution
Nitrogen and oxygen together make up 99% of the air.
APPEARS IN
RELATED QUESTIONS
Write ‘True’ or ‘False’ in front of following statement.
The area where a lot of fuel burns has more percentage of carbon dioxide.
What happens when Carbon burns in oxygen ? Also give the balanced chemical equation for the reaction.
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
State the utility of oxygen for respiration in living organisms
Name the following:
The active component of air which supports combustion and is used up in burning
Why is air considered as a mixture?
______ is the active component of air.
Carbon dioxide gas is ______.
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
Observe the picture given in Fig. carefully and answer the following questions.
Can you comment on the air quality of the place shown in Fig?
